Auxiliary barrel for guns



(No Mode-1.)

L. S. HARRISON.

AUXILIARY BARREL PoR GUNS.

No. 278,546. Patented May 29,1883.

@VV i UNTTED STATES PATENT OFFICE.

LEONARD S. HARRISON, OF NASHVILLE, OHIO.

AUXILIARY BARREL FOR GUNS.

SPECIFICATION forming part of Letters Patent No. 278,546, dated May 29, 1883. Application led February 5, 1883. (No model.)

To all whom it may concern Be it known that I, LEONARDS. HARRISON, a citizen ofthe United States ot' America, residing at Nashville, in the county of Holmes and State oi' Ohio, have invented certain new and useful Improvements in Auxiliary Barreis for Guns; and I do hereby declare the following to he a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part ot this specification.

This invention relates to guns provided with replaceable auxiliary barrels, its object being to provide a shot-gun with an auxiliary riliebarrel which may be adjusted inside ot' the shot-barrel in such manner that both barrels may he used in connection with the same tiring devices.

To this end the invention consistsin certain novel .constructions and combinations of devices, which will be hereinafter fully described, and pointed out in the appended claims.

In the accompanying drawings, Figure lis a top View of ashot-gun barrel having an auxiliary rifle-barrel arranged therein. Fig. 2 is a longitudinal section on line a: zc, Fig. 1. Fig. 3 is a top View of the ride-barrel detached. Fig. 4 is a side elevation of the gun with stock attached. Fig. 5 is a top view of a gun provided with an auxiliary barrel according to a modification of my invention. Fig. 6 is alongitudinal section of the same ou the line y y, Fig. 4, and Fig. 7 is a perspective view ofthe rifle-barrel and wedge detached and separated. Fig. S is a detail view illustrating the barrel and ramrod supporting rings.

Referring to Fig. l, the letter A indicates the shot-gun barrel, and B its breech-pin, said barrel being constructed in the ordinary manner, except that around its muzzle is secured a band, O, having an inclined catch, c, projecting laterally7 therefrom and grooved longi tudinally, said catch being intended to engage a spring-catch, O, which projects from a collar, d, secured around the muzzle of the ritiebarrel D, which is arranged inside of the shotgun barrel, its touch-hole coinciding with the nipple-hole of said barrel, this collar d being preferably squared o r datteued to receive a suitable wrench, by means ot' which the inner barrel should be withdrawn. The breech portion ot' the inner barrel should be ot' a size to tit snugly within the breech portion of the outer barrel; but it may taper toward its muzzle, and is provided with a loose conical collar, F, on the inner side of the xed collar d, with its small end inward, and adapted to euter the muzzle ot' the outer barrel. This col lar F is grooved longitudinally in order to permit the escape ot' gases and hot air from between the two barrels, and it is also provided with a notch,j', for conveniently withdrawing it.

In Fig. 2 the position of the inner barrel within the outer barrel is clearly shown, its touch-hole c coinciding with the nipple-hole ot' the. outer barrel. This touch-hole may be smooth, and the same captube or firing-cylinder may be used i'or both barrels; or the said touch-hole may be screw-threaded to receive along screw-nipple projecting from a cap-tube, and passing entirely through the nipple-hole ot' the outer barrel. The inner barrel is provided with a breech-pin, p, as shown in-the drawings; but this pin may be dispensed with, and the breech-pin of the outer barrel will serve for both.

On the under side ot' the outer barrel a socket is formed in the gun-stock to receive the breech ot' the ride-barrel when not in use, as shown in dotted lines, and near the muzzle of the barrel is ahinged ring, t', which may be turned down to receive the forward end ot' the rifle-barrel, or swung up against the barrel outot' the way when the rifle-barrel is in use. Within this ring is a smaller ring, i, hinged on the same pin, which may be turned down to receive the ramrod, the rear end oi' which will be inserted in the stock.

From the description now given, the inanner ot'inserting and removing the inner barrel will be i'ully understood without further explanation. When it is inserted and secured the piece may be used as a riiie, and as a shotgun when the inner barrel is removed.

Any suitable iiring apparatus may be used in connection with my improvement, as will be readily perceived.

In Figs. 5, 6, and 7 is illustrated amoditica- IOO lion ot" my invention;adapting an auxiliary barrel to he applied to an ordinary choke-bore shotgun. The main difference between this modification consistsiuprovidingtheinnerbarrel with a segmental wedge, which secures its breech in proper position within the breech of the outer barrel, though there are, besides, some variations of thedevices for connecting the barrels together at their muzzles. In Figs. 5 and 6 the outer barrel, A', has a choke-bore, or 011e which grows gradually smaller in diameter toward the muzzle. The inner barrel, B, is straight for the main portion of its length; but at about onesixth the distance from the breech, onehalt' ot'its circumference is gradually expanded, as shown at b2. and this segmental portion of its circumference terminates at its opposite longitudinal edges in shoulders vb3, between which is a straight portion of' the barrel, forming a seat for a segmental wedge, W, which is provided with a stem, n?, having n sulicient length to extend beyond the muzzle ofthe barrel when the wedge is onits seat. lt is provided at its outer end with a thumbpiece, 00', by which it may be operated. able guides, e, are arranged on the barrel for the stem w, said guides being prel'erahlydove tailed or undercut to retain the stem when the inner `barrel is removed from the outer barrel.

Around the muzzle of the inner barrel is a tixed collar, K,t`rom the inner edge of which, at intervals, project small pins 7s, which tit into sockets formed to receive them in the edge of the muzzle ofthe outer barrel, the inner barrel heilig thus maintained in a proper central position. From this collar also projects a spring-catch, G2, arranged to engage with a suitablyshouldered notch, c2, formed in the outer barrel, an inclined groove serving as a guide for the spring-catch. In the side of the collar is formed a guide-groove for the stem fw.

To place the inner barrel in position for use, the wedge is first drawn outward until it strikes the guides e, being then upon the smaller portion ofthe barrel. Said barrel is then inserted in the outer barrel until the pins k enter their sockets and the spring-catch C2 en gages with its retaining-notch in the outer barrel. The touch-hole of the inner barrel will then he in line with the nipplehole ot the outer barrel, and the stem 10 is then to be forced inward upon its seat, which is upon the under portion ot' the barrel, and it will force the inner barrel up snugly against the inner periphery of the outer barrel. To remove the inner barrel the wedge is first drawn outward and the spring-catch C2 disengaged from the outer barrel, when the whole may be brought out together.

Any suitable tiring apparatus may he employed, and the devices for holdingr the auxiliary barrel and rammer may he the same as heretofore described.

I wish it to he understood that I do not contiue myselt' to the precise construction or arrangement of devices shown in the drawings and heretofore particularly described, but may vary the same or substitute equivalents therefor in any manner conducive to the carrying out ofthe essential principles of my invention.

What I claim isrlhe com hination, with the inner and outer barrels, of a retainingeatch arranged upon the outer barrel, and a spring-catch secured to the inner barrel, near its muzzle, substantially as described.

2. The combination, with the choke-bore outer barrel, and the inner barrel having the wedgeseat. formed at its breech portion, ot' the wedge provided with a stem by which it may be forced upon said seat, substantially as described.

In testimony whereot' I aftix any signature in presence ot' two witnesses.

LEONARD S. HARRISON. Witnesses:

E. J. DARBY, W. W. PENNELL. 

